Leica User Forum - View Single Post - Distortion with Summicron-M 1:2/50mm

adan · 06/26/06, 09:15 PM

Milos: That graph shows the Summicron 50 has NO distortion - the red graph line is almost perfectly flat. If it curved up or down, that would show some visible distortion.

Take a look at the pdfs for some other Leica lenses (say, the 21 ASPH-M or the 15mm Elmarit-R or one of the zooms for the R) as a comparison to see the difference.

In a distortion graph for, say, a fisheye lens, the red line would curve steeply downwards like a waterfall (more and more distortion or curving of the picture as the eye moves from the center to the corners/edges).

06/26/06, 09:15 PM	#3 (permalink)
adan Erfahrener Benutzer Join Date: 03/04/04 Location: Denver Posts: 1,066	Re: Distortion with Summicron-M 1:2/50mm Milos: That graph shows the Summicron 50 has NO distortion - the red graph line is almost perfectly flat. If it curved up or down, that would show some visible distortion. Take a look at the pdfs for some other Leica lenses (say, the 21 ASPH-M or the 15mm Elmarit-R or one of the zooms for the R) as a comparison to see the difference. In a distortion graph for, say, a fisheye lens, the red line would curve steeply downwards like a waterfall (more and more distortion or curving of the picture as the eye moves from the center to the corners/edges).